Limnocoris insularis Champion

Rodrigues, Higor D. D. & Sites, Robert W., 2019, Revision of Limnocoris (Heteroptera: Nepomorpha: Naucoridae) of North America, Zootaxa 4629 (4), pp. 451-497: 465-467

publication ID

https://doi.org/10.11646/zootaxa.4629.4.1

publication LSID

lsid:zoobank.org:pub:0DB18F90-AAFD-4FB7-B1ED-09A86A707C9F

persistent identifier

http://treatment.plazi.org/id/03E58815-E932-FFA7-FF61-F6CFFE0C5A53

treatment provided by

Plazi

scientific name

Limnocoris insularis Champion
status

 

Limnocoris insularis Champion 

( Figs. 7View FIGURE 7, 10View FIGURE 10 A–B, 20B)

Limnocoris insularis Champion, 1901: 359–360  (original description, table 21, fig. 16).

Limnocoris insularis: Kirkaldy & Torre-Bueno 1909: 183  (catalog); La Rivers 1971: 75 (catalog); Stout 1978: 1–11 (ecological study, new record); Stout 1981: 1170–1178 (ecological study); Stout 1982: 75–83 (ecological study); Nieser & López-Ruf 2001: 319 (catalog); Herrera 2013: 227 (catalog).

Limnocoris alcorni La Rivers, 1976: 9–10  (original description) (new synonym).

Limnocoris alcorni: Nieser & López-Ruf 2001: 318  (catalog); Herrera 2013: 226–227 (catalog).

Diagnosis. Specimens of L. insularis  are small, measuring 5.90–6.33 mm. The pedicel is quadrate; and the flagellomeres are slender, not partially fused, and with long setae. The pubescent area of the propleuron is distinctly extended posteriorly on the lateral margin (as in Fig. 1AView FIGURE 1); the posterior margin of the propleuron is straight at midlength ( Fig. 7DView FIGURE 7). The anterior projection of the mesosternal carina can be poorly developed in some specimens ( Fig. 7GView FIGURE 7); the region between this projection and the fossa is almost straight ( Fig. 7GView FIGURE 7) or slightly sinuated ( Fig. 7FView FIGURE 7)and without a medial projection ( Figs. 7View FIGURE 7 F–G); the fossa is shallow, subtriangular, with the anterior margin slightly convex, and the lateral margins converge posteriorly ( Fig. 7DView FIGURE 7). The lateral margins of the female subgenital plate lack the tuft of elongate golden setae ( Fig. 7EView FIGURE 7).

Measurements (n = 5 males / 5 females): Body length 5.90–6.13/ 6.00–6.33, body width 4.05–4.35/ 4.10–4.51, synthlipsis 1.00/ 1.02–1.05, head length 0.90–0.98/ 0.92–1.02, head width 1.90–2.00/ 1.95–2.10, pronotum length on midline 1.13–1.30/ 1.10–1.22, pronotum width 3.60–3.81/ 3.56–3.90, scutellum length 0.85–1.05/ 0.90–1.10, scutellum width 1.75–2.10/ 1.60–2.15, hemelytra length 4.30–4.50/ 4.40–4.70.

Supplemental description. Antenna not exceeding lateral margin of eye. Maxillary plate tumescent anteriorly. Distal margin of labrum ranging from rounded to slightly acuminate. Propleura with posteromesal corner near prosternellum deflexed ventrally. Region between mesobasisternum and mesoepisternum without longitudinal row of elongate golden setae ( Fig. 7DView FIGURE 7). Metasternal carina with fossa ranging from oval to rounded, slightly depressed medially; posterior margin excavated in lateral view ( Fig. 7GView FIGURE 7). Lateral margin of abdomen with minute serration; posterolateral corners of II–V narrowly rounded to right angled, not spinose. Abdominal sternum II with an irregular patch of elongate golden setae (as in Fig. 1GView FIGURE 1); abdominal sterna without generally dispersed elongate setae throughout. Male: mediotergite VI with accessory genitalic process poorly developed; posterior margin of mediotergite VII forming two pairs of small lobes, one medial and other lateral; lateral and mesal margins of laterotergite VII straight, posterior margin rounded ( Fig. 10AView FIGURE 10); lateral lobe of tergum VIII straight in anterior half of lateral margin; left medial lobe angled laterally at apex, distal margin truncate; right medial lobe twisted in distal third ( Fig. 10BView FIGURE 10). Female: posterior margin of subgenital plate ranging from rounded to slightly acuminate; laterosternite VII with parallel margins, tapering in apical third ( Fig. 7EView FIGURE 7).

Comparative notes. Limnocoris insularis  is morphologically similar to L. lutzi  , L. nanus  n. sp., and L. zacki  n. sp. These four species share the general shape and dimensions of the body, pubescence pattern of the ventral surface of the body, shape of the metasternal carina, and shape of male abdominal terga VI–VIII. The main character to distinguish these species is the shape of the mesosternal carina: in L. insularis  and L. lutzi  the fossa is projected further ventrally than is the anterior projection (both at same level in L. nanus  ), and the region between the anterior projection and fossa is without a medial projection (present in L. zacki  ). Limnocoris insularis  differs from L. lutzi  by having the antennal flagellomeres divided and not partially fused (although this can be difficult to discern), the mesosternal carina with the region between the anterior projection and fossa almost straight or shallowly sinuous in lateral view, and male tergum VIII with the apex of the left medial lobe distinctly angled laterally; whereas in the latter species the flagellomeres are partially fused, the mesosternal carina is concave between the anterior projection and fossa in lateral view, and male tergum VIII has the apex of the left medial lobe only slightly angled laterally.

Discussion. We examined the holotypes of L. insularis  and L. alcorni  ; these two species are very similar morphologically, including the morphology of the mesosternal carina, the main diagnostic character. La Rivers (1976) differentiated L. alcorni  from L. insularis  by the condition of the hemelytra, in which the former species has evident claval and intraclaval sutures, the hemelytral commissure is shorter, and hindwings are developed, whereas in the latter species the claval and intraclaval sutures are absent, the hemelytral commissure is longer, and the hindwing are reduced. This difference in hemelytral condition is a result of hindwing polymorphism, a common phenomenon within the family; the holotype of L. insularis  is a brachypterous specimen and the type series of L. alcorni  is composed, with the exception of one specimen, of macropterous specimens. Thus, L. alcorni  is here considered a junior synonym of L. insularis  .

Distribution. This species is distributed in Belize ( Belize, Cayo, Orange Walk, Stann Creek, and Toledo), Costa Rica (Guanacaste and Heredia), Guatemala (Baja Verapaz, El Progresso, Guatemala, and Santa Rosa), Honduras (Islas de la Bahía), Mexico (Chiapas and Veracruz), and Nicaragua (Jinotega and Región Autónoma del Atlántico Norte) ( Fig. 20BView FIGURE 20). Limnocoris insularis  was collected in localities ranging from sea level to elevations up to 1,355 meters.

Published records. Belize: Belize, Cayo, Orange Walk, Stann Creek, Toledo ( Sites et al. 2018)  ; Costa Rica: Heredia ( Stout 1978, 1981, 1982)  ; Guatemala: Santa Rosa ( La Rivers 1976)  ; Honduras: Islas de la Bahía ( Champion 1901)  .

Type material examined. HOLOTYPE of L. insularis  , ♀ brachypterous, HONDURAS, Islas de la Bahía, Bonacca, Gaumer ( BMNH)  . HOLOTYPE of L. alcorni  , ♀ macropterous, GUATEMALA, Santa Rosa, El Molino , 2.August.1956, A.A. Alcorn, Type No 13418 ( CAS)  . PARATYPES of L. alcorni  , 1♂ brachypterous, 13♂ macrop- terous, 9♀ macropterous, same data as holotype ( CAS)  .

Additional material examined. In addition to all BELIZE Material examined in Sites et al. (2018): BELIZE, Cayo, Augustine, 8 km N, 25.May.1986, colln 19, collected from little Vaquero Creek, 450 m alt., Paul J. Spangler & Robin Faitoute (1♀ macropterous, USNM). Stann Creek, Kendal, 12 Km W, 26.April.1987, collected from South Stann Creek at cockscomb, Wildlife Sanctuary, Spangler & Faitoute (1♂ brachypterous, USNM)  . COSTA RICA, Alajuela, Rio Cataratas, on road from San Ramon to Fortuna , 25 Nov. 2002, W.D. Shepard, WDS-A- 1498 (2♂ macropterous, UMC)  . Guanacaste, Las Canas , 23.VII.1965, P.J. Spangler (1♀ brachypterous, USNM)  ; same data, except 13.VII.1965 (1♂ brachypterous, USNM)  ; Colorado , 31.March.1988, W.E. Steiner, J.M. Hill, J.M. Swearingen & J.M. Mitchell (1♀ brachypterous, USNM)  ; 1 km N Caimito, Rio Piñallas , 280 ft, 15 June 2001, W.D. Shepard, WDS-A-1388 (3♂, 1♀, all brachypterous, UMC)  . Limon, Shirolles, Rio Shirolles , 280 ft, 12 June 2001, W.D. Shepard, WDS-A-1383 (1♂, 1♀, all macropterous, UMC)  . San Jose, 1 km NE La Palma, Rio Pedregosa , 2000 ft, 22 June 2001, W.D. Shepard, WDS-A-1392 (5♂, 3♀, all brachypterous, UMC)  . GUATEMALA, Baja Verapaz, Rio Quilila, Rt 5, old rd to Salama from CA-14, 1355 m, 15°13.913’N / 90°17.662’W, 15 Sept 2009, R.S. Zack & J. Monzon collectors (1♂, 1♀, all brachypterous, 1♂, 1♀, all macropterous, UMC)GoogleMaps  ; same locality, 5 June 2011, R.S. Zack (1♀ macropterous, 1♀ brachypterous, 5 nymphs, WSU)GoogleMaps  . El Progresso, El Progresso / Zacapa Depts. border, Rt. RD-1, Tambor River , 05.June.2011, 14°55.763’N / 89°49.092’W, 284 m, R.S. Zack collector (1♀ macropterous, UMC)GoogleMaps  ; Sn. Augustine AC., 13.VIII.1965, Paul J. Spangler (2♂ brachypterous, 1♂ macropterous, 5♀ brachypterous, USNM)  ; Rio Las Pericas , 1040 ft, 11 km W El Rancho Jnct, 12 July 2001, W.D. Shepard, WDS-A-1408 (1♂ bra- chypterous, UMC)  . Guatemala, 35 Km SE of Guat. City, 12.March.1946, R.R. Miller (2♂ brachypterous, USNM)  . Izabal, Rt 7E, Rio Sauce nr El Sauce, N 15°33.642’/ W89°17.036’ 6 June 2011, R.S. Zack (1♂, 3♀ macropterous, WSU)  ; Rio Juan de Paz, 10 km W Das Amates , 400 ft, 15 July 2001, W.D. Shepard, WDS-A-1424 (2♂ brachyp- terous, UMC)  ; unnamed stream 2 km SW Montufar , 360 ft, 15 July 2001, W.D. Shepard, WDS-A-1425 (8♂, 7♀, all brachypterous, UMC)  . Zacapa, Rt CA-9, “Ojo de Agua” river at Monte Grande E of Teculutan, N15°00.806’/ W89°39.580’, 24 July 2007, R.S. Zack (2♂, 2♀ macropterous, WSU; 2♂ macropterous, 2♀ macropterous, 1♀ brachypterous, UMC)  ; Rio Cayo, 2.3 km E, Santa Cruz , 830 ft, 14 July 2001, W.D. Shepard, WDS-A-1420 (1♂, 1♀ macropterous, UMC)  . MEXICO, Chiapas, Rio Huixtla at Huixtla , 31 March 2015, L-1899, colls. Reynoso- Velasco, Sites, and Shepard, 64 m, 15°8.999'N, 92°27.077'W, gravel and rocks (1♂ brachypterous, MZUSP)GoogleMaps  ; Mpio. Benemérito de las Americas, Flor de Cacao , tributary of Rio Salinas , 30 March 2015, L-1891, gravel, cobble riffles, 145 m, 16°9.407’N / 90°29.632’W, Reynoso-Velasco, Sites, Shepard & Barr (1♂, UMC; 1♂, 2♀, MZUSP—all bra- chypterous)GoogleMaps  . Veracruz, Municip. Tlapacoyan, Rio Ixtacuaco , rocky stream thru cattle farm, L-1121, 20°01.921’N / 97°07.073’W, 111 m, 07.XI.2009, Sites, Cervantes & Novelo (1♂ brachypterous, UMC)GoogleMaps  . NICARAGUA, Jinotega, Mayangna, Sauni Bu, Rio Amak , 14°14’7.0”N / 85°08’58.0”W, 171 m, 31.V.2003, G. Camilo (6♂, 6♀, all brachyp- terous, 2♂ macropterous, UMC)GoogleMaps  ; Raiti, Kipla Sait Tasbaika, Rio Coco , 14°35’33”N / 85°01’49.7”W, 27.V.2003, G. Camilo (1♂, 1♀, all brachypterous, 1♀ macropterous, UMC)GoogleMaps  . Rio San Juan, unnamed stream, Refugio Bartola , 8 Aug. 2002, W.D. Shepard, WDS-A-1490 (1♂ brachypterous, UMC)  . Región Autónoma del Atlántico Norte, Tuburus, Miskito , Indian Tasbaika , Rio Geo , 14°16’36”N / 85°10’40”W, 22–23.V.2003, G. Camilo (3♂ brachypterous, 3♀ macropterous, UMC)GoogleMaps  .

CAS

California Academy of Sciences

USNM

Smithsonian Institution, National Museum of Natural History

WSU

Weber State University, Bird and Mammal Collection

MZUSP

Museu de Zoologia da Universidade de Sao Paulo

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hemiptera

Family

Naucoridae

Genus

Limnocoris

Loc

Limnocoris insularis Champion

Rodrigues, Higor D. D. & Sites, Robert W. 2019
2019
Loc

Limnocoris insularis: Kirkaldy & Torre-Bueno 1909: 183

Herrera, F. 2013: 227
Nieser, N. & Lopez-Ruf, M. 2001: 319
La Rivers, I. 1971: 75
Kirkaldy, G. W. & Torre-Bueno, J. R. 1909: 183
Loc

Limnocoris alcorni: Nieser & López-Ruf 2001: 318

Nieser, N. & Lopez-Ruf, M. 2001: 318